Solveeit Logo
Login

Question

Question: \(pH\) of a solution is 5. Its hydroxyl ion concentration is....

pHpH of a solution is 5. Its hydroxyl ion concentration is.

A

5

B

10

C

10−510^{- 5}

D

10−910^{- 9}

Answer

10−910^{- 9}

Explanation

Solution

pH=5means[H+]=10−5pH = 5\text{means}\lbrack H^{+}\rbrack = 10^{- 5}

pOH=14−pH=14−5=9pOH = 14 - pH = 14 - 5 = 9

[OH−]=10−pOH=10−9\lbrack OH^{-}\rbrack = 10^{- pOH} = 10^{- 9}